Android Question [Firebase] FCM manage

[dar2o3]

I can not find information on topics firebase to manage, if no one is subscribed to a topic is automatically deleted?
If so.
what happens if I send a message to a topic that no longer exists?

 

[Erel]

The topics are managed by firebase backend. You don't need to do anything.

what happens if I send a message to a topic that no longer exists?

Then the messages will not be sent to any device.